microvascular anastomosis
Surgical connection of small blood vessels using microscopic techniques, essential in free tissue transfer procedures.
Full Definition
Microvascular anastomosis refers to the precise surgical connection of small blood vessels, typically arteries and veins less than 3mm in diameter, using an operating microscope and specialized microsurgical instruments. This technique is fundamental to free tissue transfer procedures where completely detached tissue must be reconnected to the recipient site's blood supply. The procedure requires meticulous technique to ensure vessel patency and prevent thrombosis. Success rates for microvascular anastomoses in experienced hands exceed 95%.
Usage
Usage note: Often abbreviated as 'anastomosis' in surgical reports when the microvascular context is clear.
In Context
- "The microvascular anastomosis was performed using 9-0 nylon sutures under 25x magnification." — Operative report
- "Thrombosis at the microvascular anastomosis site remains the leading cause of free flap failure." — Surgical outcomes study